It might make sense at some point in the future where an autopilot system knows how to taxi, take off, troubleshoot issues by itself during the critical phases of flight and so on.
And like others said, aviation is one of the safest industries on the planet.
What makes you think so?
A runway may be clear when given the clearance to land. And that happens about 4NM from the RWY threshold. In the meantime a incursion might happen. Given low visibility you may not see it as you land a big airplane whose nose is a bit high up because of the flare. And even if you see it, it takes a few seconds for engines to spool up to full power in order to do a go-around.
Why? Human to human leaves room for error and misinterpretation.
Think of the 737 Max whose computers crashed two planes because of incorrect sensor data being fed to them. The pilots there tried to rescue the planes while the planes were following their logic, which was flawed.
Except when they don't, and confirmation bias themselves into doing the wrong thing. The most likely cause of a plane crash is pilot error, and runway incursions happen shockingly often [1][2][3][4]. The only reason there hasn't been a Tenerife-style disaster is sheer luck.
1: https://www.youtube.com/watch?v=b26NcJCLZl4
2: https://www.youtube.com/watch?v=5AbpxqtXcPk
3: https://www.youtube.com/watch?v=oI2rJhdvguc
4: https://www.youtube.com/watch?v=xPJjw68RI2w (the pilots did everything right here, it was the controller who screwed up!)
Computers are not infailable either. So while they add a lot of safety features and ease the workload of the pilots, they should not have final authority over pilot actions. 737 Max is a prime example of why.